The Maryland Gravitation Group has participated since the 1960's in the exciting development of the subject of General Relativity Theory. The discovery of this theory by Einstein in 1915 involved far reaching insights on the nature of gravity and the dynamical structure of space and time. General Relativity has come to play a central role in understanding the most energetic astrophysical processes in the universe, the history and dynamics of the cosmos as a whole, and in the puzzles that lie today at the frontiers of fundamental physics.